Monitoring & uptime

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QuietDiff

Only alerts that matter

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A web change monitoring tool that re-checks every detected change before alerting and filters out noise like timestamps, rotating ads, and footer years.

Overview

The QuietDiff homepage

QuietDiff is a web monitoring service that detects meaningful changes on websites by re-checking every change before alerting. It filters out noise such as timestamps, rotating ads, and footer years, then shows the old and new values side by side.

The platform integrates with your workflow through a REST API, MCP server for AI agents, or webhook alerts. It supports multiple alert channels including email, Slack, and HMAC-signed webhooks. JavaScript-heavy sites are rendered using headless Chromium on paid plans.

The service includes AI significance filtering on higher tiers, monitor health tracking to detect broken selectors or site downtime, and per-monitor confirmation re-checks to avoid false alerts from single bad fetches or A/B tests.

Capabilities

AI Significance Filtering
Structured Field Diffs
Confirmation Re-checks
REST API and OpenAPI
MCP Server for AI Agents
Monitor Health Tracking
Multi-Channel Alerts
JavaScript Rendering with Headless Chromium
HMAC-signed Webhooks
AI Summaries

Pricing

Pricing model: Freemium

Free: $0/month with 10 monitors and daily checks. Starter: $9/month with 100 monitors and hourly checks. Pro: $29/month with 500 monitors and 10-minute checks. Agency: $99/month with 3,000 monitors and 5-minute checks.

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QuietDiff fact sheet

Community votes	0
Based in	Aurora, United States
Website	quietdiff.com

QuietDiff metrics

Vendor metrics for quietdiff.com: Ahrefs Domain Rating and Majestic link data, with the delta since the last review.

Domain Rating: 0; no change since last check
Trust Flow: 0; no change since last check
Citation Flow: 0; no change since last check
Referring domains: 0; no change since last check
External backlinks: 0; no change since last check

Vendor Domain Rating (Ahrefs) checked 6 Nov 2026, spec changed 5 Nov 2026. Vendor Majestic data checked 5 Nov 2026, spec changed 5 Nov 2026. Link metrics supplied by Majestic. Trust Flow, Citation Flow and Topical Trust Flow are trademarks of Majestic-12 Ltd.

QuietDiff vendor domain

Open the vendor record

We read this from the registry's RDAP record on 5 Nov 2026, 19:50 UTC.

Domain age: 4 days
Registered: 2 Nov 2026
Expires: 2 Nov 2027
Registrar: Name.com, Inc.
DNSSEC: Not signed

Vendor domain report: quietdiff.com

QuietDiff post-launch report

Measured after QuietDiff went live on SaaS Directory Pro on 5 November 2026.
Measure	At launch, then latest
Domain Rating (Ahrefs)	0 first measured 5 Nov 2026
Trust Flow (Majestic)	0 first measured 5 Nov 2026
Referring domains (Majestic)	0 first measured 5 Nov 2026

Day 0 since launch. Next receipt: day 30, 5 Dec 2026. Many things move these figures, so a change is not proof of cause. Only stored readings are shown.

Biggest gains on SaaS Directory Pro

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Compare and explore

See the alternatives to QuietDiff, Ultraviolet Observability vs QuietDiff, ZoneWatcher vs QuietDiff, Reevera vs QuietDiff, Upcheck vs QuietDiff, Uptimepage vs QuietDiff, UptimeRocket vs QuietDiff, more in Monitoring & uptime or startups in United States.

Buyer questions

How does AI significance filtering work?

Pro and Agency plans include AI analysis of detected changes to determine significance, suppressing trivial changes like timestamps, cookie banners, or minor formatting tweaks. Free and Starter plans receive exact old-to-new diffs and confirmation re-checks without AI analysis.

What is the MCP server?

Model Context Protocol lets AI agents like Claude Desktop monitor websites for you. Install the MCP server and your AI assistant can create monitors, check for changes, and report back in natural language.

Do you support webhooks?

Yes, all alerts can be sent to your webhook endpoint with HMAC-SHA256 signatures for verification, along with email alerts and optional Slack notifications.

Can I cancel anytime?

Yes, you can cancel anytime via the Stripe Customer Portal with no questions asked. The free tier stays free forever.

How do I get started?

Sign up for a free account, create your first monitor with the URL and fields to track, then the system will check it daily and alert you to meaningful changes. You can upgrade anytime for faster checks.

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